DETECTO’s unique touchless sonar height rod instantly locks on the patient’s height and measures nearly any patient size. The apex’s sonar height rod measures from 24 inches (2 ft) up to 86 inches (7’2”) by 0.2 inch increments and metric readouts of 60 cm up to 218 cm by 0.5 cm increments (model APEX-SH). Simply step on the scale and your height will be captured and displayed on the LCD within a second.